diff --git a/sys/dev/sound/pcm/buffer.h b/sys/dev/sound/pcm/buffer.h
--- a/sys/dev/sound/pcm/buffer.h
+++ b/sys/dev/sound/pcm/buffer.h
@@ -111,9 +111,6 @@
 int sndbuf_dispose(struct snd_dbuf *b, u_int8_t *to, unsigned int count);
 int sndbuf_feed(struct snd_dbuf *from, struct snd_dbuf *to, struct pcm_channel *channel, struct pcm_feeder *feeder, unsigned int count);
 
-u_int32_t sndbuf_getflags(struct snd_dbuf *b);
-void sndbuf_setflags(struct snd_dbuf *b, u_int32_t flags, int on);
-
 #ifdef OSSV4_EXPERIMENT
 void sndbuf_getpeaks(struct snd_dbuf *b, int *lp, int *rp);
 #endif
diff --git a/sys/dev/sound/pcm/buffer.c b/sys/dev/sound/pcm/buffer.c
--- a/sys/dev/sound/pcm/buffer.c
+++ b/sys/dev/sound/pcm/buffer.c
@@ -694,20 +694,6 @@
 	return (0);
 }
 
-u_int32_t
-sndbuf_getflags(struct snd_dbuf *b)
-{
-	return b->flags;
-}
-
-void
-sndbuf_setflags(struct snd_dbuf *b, u_int32_t flags, int on)
-{
-	b->flags &= ~flags;
-	if (on)
-		b->flags |= flags;
-}
-
 /**
  * @brief Clear the shadow buffer by filling with samples equal to zero.
  *